Trend Micro Internet Security (known as PC-cillin Internet Security in Australia and Virus Buster in Japan) is an antivirus and online security program developed by Trend Micro for the consumer market. According to NSS Lab comparative analysis of software products for this market in 2014, Trend Micro Internet Security was fastest in responding to new internet threats.[1]

In addition to anti-malware and web threat protection, the premium version of this software includes compatibility for PCs, Macs, Android or iOS mobile devices; parental controls; identity theft prevention; a privacy scanner for major social networking sites; and 25 GB of cloud storage.[2]

AV-TEST in October 2014 gave Trend Micro Internet Security 2015 a score of 17 out of a possible 18 points.[5]

Trend Micro Maximum Security scored the highest success rate in blocking malware downloads in NSS Labs’ 2014 Consumer Endpoint Protection test focused on Socially Engineered Malware. The results were based on continuous series of tests to determine the participants’ effectiveness against socially engineered malware. NSS Labs is an independent network testing facility, security and consultancy organization. NSS Labs also found that Trend Micro had the quickest time in adding protection against unknown threats - less than 15 minutes.[1]

In January 2016 it was discovered that the consumer version of Trend Micro AV allowed any website visited by its users to execute arbitrary code or read all browser passwords on the Windows PC it purportedly protected. A patch was later issued to close the issue.[6]

In June 2014, AV-Test published results for its mobile security endurance tests, which assessed more than 30 apps over a six-month period. Trend Micro’s mobile security tied for the highest overall score of 13 out of 13 points.[7]

PC-cillin 2000 and earlier versions were virus scanners without any additional features. PC-cillin 2002 and 2003 were stand-alone virus scanners which also included a firewall component and improved the on the software’s scanning and virus detection engine.
Newer versions of Trend Micro Internet Security offer additional features such as spyware protection, antispam and an integrated firewall along with an improved scanning and virus detection engine and enhanced heuristics. PC-cillin 2003 was the last stand-alone antivirus product offered by Trend Micro until 2007, when the company released a standalone anti-malware product that offered protection from malicious software including viruses, spyware, and adware.